import uuid
import hashlib
from django.conf import settings


def md5(string):
    """ MD5加密 """
    hash_obj = hashlib.md5(settings.SECRET_KEY.encode('utf-8'))
    hash_obj.update(string.encode('utf-8'))
    return hash_obj.hexdigest()


def uid(string):
    """ uuid生成 """
    return md5('{}-{}'.format(str(uuid.uuid4()), string))